The Sleuth Kit is a C++ library and collection of open source file system forensics tools that allow you to, among other things, view allocated and deleted data from NTFS, FAT, FFS, EXT2, Ext3, HFS+, and ISO9660 images.

APBS is a software package for the numerical solution of the Poisson-Boltzmann equation, a popular continuum model for describing electrostatic interactions between molecular solutes over a wide range of length scales. <http://www.poissonboltzmann.org/>.
Please register at http://goo.gl/LGVU5j before downloading!

MooseFS (MFS) is a fault tolerant, network distributed file system. It spreads data over several physical servers which are visible to the user as one resource. For standard file operations MooseFS mounted with FUSE acts as other Unix-alike file systems.
Due to license change to GPLv2, versions prior to 2.0.60 and Pro packages have been removed.
If you are looking for source code or package repository, visit http://get.moosefs.com

A very high quality package of printer drivers for Ghostscript and CUPS on Linux, Macintosh OS X, and other POSIX-compliant operating systems. This project also maintains an enhanced Print plug-in for GIMP 2.x from the same code base.